Simrad PSIMTV80 datagram format
Simrad PSIMTV80 is a proprietary datagram format created by Kongsberg Discovery to provide data related to the measurements and location of the sensors in the gear from the Simrad TV80 gear monitoring software.
Format
$PSIMTV80,hhmmss,yymmdd,ddmm.hh,N,dddmm.hh,W,ddmm.hh,N,dddmm.hh,W,kk.kk,ccc.cc,
hhh.hh,mmmm.m,tt,fff,ooo,vvvv.vv,qq,xxxxxx*cc
Description
Note
This datagram description is not complete. For more information, contact Kongsberg Discovery.
1 PSIMTV80: Talker identifier
2 hhmmss: Coordinated Universal Time (UTC) (Hours, minutes and seconds)
3 yymmdd: Date (Year, month and day)
4 ddmm.hh,N: Vessel latitude (Degrees, minutes and hundredths)
•  N = North
•  S = South
5 ddmm.hh,W: Vessel longitude (Degrees, minutes and hundredths)
•  W = West
•  E = East
6 ddmm.hh,N: Sensor latitude (Degrees, minutes and hundredths)
•  N = North
•  S = South
7 ddmm.hh,W: Sensor longitude (Degrees, minutes and hundredths)
•  W = West
•  E = East
8 kk.kk: Vessel speed (knots)
9 ccc.cc: Course over ground (degrees)
10 hhh.hh: Heading (degrees)
11 mmmm.m: Echo sounder depth (Metres)
12 tt: Type of measurement. This is the type of measurement provided by the sensor.. See: Type of measurement
13 fff: Measurement from (location). This is the physical location of the sensor on the trawl. See: Measurement from (location)
14 ooo: Measurement to (location). For certain measurements, some sensors work in pairs. This field specifies the location of the second sensor in a pair.. The three characters are coded in the same manner as fff.
15 vvvv.v: Measurement value (Measured sensor value (Always SI units))
16 qq: Sensor data quality (0 ‑ 10)
•  0 = Error / Exception)
•  1 = Low
•  10 = High
17 xxxxxx: Sensor ID (This is a unique gear monitoring sensor identifier; usually corresponds to its serial number.)
18 cc: Checksum (The checksum field consists of a "*" and two hex digits representing the exclusive OR of all characters between, but not including, the "$" and "*" characters.)
Type of measurement
The type of measurement is coded using one or two characters.
tt Type of measurement tt Type of measurement
1 Spread 15 Clearance (PX TrawlEye)
2 Height 16 Opening (PX TrawlEye)
3 Depth 17 Geometry
4 Roll 18 Geometry differential
5 Pitch 19 Temperature
6 Battery status 20 Catch
7 Roll (PX TrawlEye) 21 Bottom contact
8 Pitch (PX TrawlEye) 22 Rip
9 Depth (PX TrawlEye) 23 Compass
10 Temperature (PX TrawlEye) 24 Flow 1
11 Battery status (PX TrawlEye) 25 Flow 2
12 Height PX TrawlEye 26 Flow 3
13 Geometry differential PX TrawlEye 27 Flow 4
14 Catch PX TrawlEye 28 Flow 5
Measurement from (location)
Three characters are used.
•  The first character identifies the trawl(s) These are listed from port towards starboard, and starts from "a".
•  The next characters identify the physical location of the sensor on the trawl(s). This is expressed with one or two characters.
On a dual trawl, the location on the clump is defined as a2 while the starboard door is b2. On a triple trawl, the clumps are a2 and b2 while the starboard door is c2.
Image
Code Location
1 Port door
2 Starboard door/Clump
On a dual trawl, the location on the clump is defined as a2 while the starboard door is b2. On a triple trawl, the clumps are a2 and b2 while the starboard door is c2.
3/4 Sweep lines
5/6 Wings
7 Headrope
8 Footrope
9/10 Tunnel
11 - 18 Codend